SOLUTION: how much pure water must be mixed with 2 liters 40% solution of antifreeze to get a 25% antifreeze mixture?

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Question 253717: how much pure water must be mixed
with 2 liters 40% solution of antifreeze to get a 25% antifreeze mixture?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
0*x+.4*2=.25(x+2)
solve for x liters of water